International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 08 March 2016

Riccardo Longo, Chiara Marcolla, Massimiliano Sala
ePrint Report ePrint Report
Bilinear groups are often used to create Attribute-Based Encryption (ABE) algo- rithms. In our proposal, a Multiple-Authorities Key-Policy Attribute-Based Encryp- tion scheme is constructed in which the authorities collaborate to achieve shorter keys and parameters, enhancing the efficiency of encryption and decryption. We prove our system secure under an original variation of the bilinear Diffie- Hellman assumption, we also show its relation with other similar assumptions.
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